Key specification for this steam boiler: type Natural Circulation. Everything below is reproduced from the factory data sheet. Made by Wuxi Zozen Boilers Co., Ltd. (21 years on the platform, factory-assessed). Send your target quantity and destination for a firm quotation with current lead times.
Key Features of This Steam Boiler
- Product Thermal Capacity: 1-20 t/h
- Warranty: 1 Year
- Warranty Of Core Components: 1 Year
- Place Of Origin: Jiangsu, China
- Type: Natural Circulation
- Weight: 2T~50T
Technical Specifications
| Output | Steam |
|---|---|
| Usage | Industrial |
| Steam Production | Max. 20t/h |
| Pressure | Low Pressure |
| Structure | Fire Tube |
| Type | Natural Circulation |
| Core Components | drum |
| Key Selling Points | Famous Brand PLC |
| Style | Horizontal |
| Warranty | 1 Year |
| Video Outgoing-Inspection | Provided |
| Machinery Test Report | Provided |
| Place Of Origin | Jiangsu, China |
| Brand Name | ZOZEN |
| Dimension(L*W*H) | Maximum 8300mm*3400mm*4020mm |
| Product Name | WNS Light diesel oi fired steam boilerl |
| Product Thermal Capacity | 1-20 t/h |
| Working Pressure | 0.7-2 Mpa |
| Thermal Efficiency | >98% |
| Available Fuel | Nature gas, coke oven gas, biogas, methanol |
| Available Industries | Heat suppling, chemical, food,fodder |
| Advantages | Top 1 A-Class Boiler |
| Operation | Fully Automatic Control |
| Manufacturer | 30 Years History |
| Color | Customers Requirment |
| Showroom Location | Viet Nam, Philippines, Peru, Indonesia, Pakistan, Mexico, Russia, Thailand, Morocco, Kenya, Argentina, Colombia, Algeria, Sri Lanka, Romania, Bangladesh, Kazakhstan, Ukraine, Kyrgyzstan, Nigeria, Uzbekistan, Tajikistan, Malaysia |
| Warranty Of Core Components | 1 Year |
| Condition | New |
| Fuel | Oil-fired |
| Applicable Industries | Food & Beverage Factory, chemical, textile, paper, dairy, hospital, rubber,building materials |
| Weight | 2T~50T |
| Selling Units | Single item |
| Single Volume | 0 cm³ |
| Single Gross Weight | 0.0 kg |
Product Details


2. THERMAL EFFICIENCY≥98%: Th economizer and condenser can reuse the waste heat
3. EASY TO OPERATE AND MAINTAIN: Boiler internet of things +remote control + experts management
4. ADVANCED LOW NOX BURNER: Environmental protection, NOx emission≤30mg/Nm³


1 2 3 4 6 8 10 12 15 20 Ton Industrial Gas lpg oil Fired Steam Boiler
WNS series horizontal internal combustion boiler is a boiler shell type 3 passes wetback oil/gas fired boiler. After fuel is being atomized by burner, flame is full of the wave furnace and transfer heat via furnace wall, this is 1st pass; the high temperature smoke is collected in reversal chamber and then enters 2nd pass which is grooved tubes bundle area; after heat convection, air temperature gradually falls and goes to front smoke box and turn to 3rd pass, which is smooth tubes bundle area, and then enters chimney passing back smoke box and exhausted to the atmosphere.


2. Thermal efficiency at least 5% higher than normal systems, annual fuel cost savings for each 10.5MW boiler as high as USD100,000
3. Safety assured by advanced control systems
4. Save your money and time with custom designed and engineered systems and solutions
5. Full automation that enables unat-tended operation
In past 10 years, over 15580 customer cases have been achieved.




Working pressure:0.7-2 Mpa
Available fuel:Nature gas, coke oven gas, biogas, methanol, liquid propane gas, diesel, heavy oil, light oil, crude oil, etc.
Model | Rated steam capacity(t/h) | Rated working pressure(Mpa) | Rated steam temperature(℃) |
WNS1-0.7-Y(Q) | 1 | 0.7 | 170 |
WNS1-1.0-Y(Q) | 1 | 1 | 184 |
WNS1.5-1.0-Y(Q) | 1.5 | 1 | 184 |
WNS1.5-1.25-Y(Q) | 1.5 | 1.25 | 194 |
WNS2-1.0-Y(Q) | 2 | 1 | 184 |
WNS2-1.25-Y(Q) | 2 | 1.25 | 194 |
WNS3-1.0-Y(Q) | 3 | 1 | 184 |
WNS3-1.25-Y(Q) | 3 | 1.25 | 194 |
WNS4-1.25-Y(Q) | 4 | 1.25 | 194 |
WNS4-1.6-Y(Q) | 4 | 1.6 | 204 |
WNS5-1.25-Y(Q) | 5 | 1.25 | 194 |
WNS5-1.6-Y(Q) | 5 | 1.6 | 204 |
WNS6-1.25-Y(Q) | 6 | 1.25 | 194 |
WNS6-1.6-Y(Q) | 6 | 1.6 | 204 |
WNS8-1.25-Y(Q) | 8 | 1.25 | 194 |
WNS8-1.6-Y(Q) | 8 | 1.6 | 204 |
WNS10-1.25-Y(Q) | 10 | 1.25 | 194 |
WNS10-1.6-Y(Q) | 10 | 1.6 | 204 |
WNS15-1.25-Y(Q) | 15 | 1.25 | 194 |
WNS15-1.6-Y(Q) | 15 | 1.6 | 204 |
WNS20-1.25-Y(Q) | 20 | 1.25 | 194 |
WNS20-1.6-Y(Q) | 20 | 1.6 | 204 |










1. How can you get the best price quickly?
(1) We need to know the boiler capacity, the fuel you plan to use and the steam pressure you need, and then we can confirm the boiler model.
(2) Customer needs to provide us your name, email address and company name, and then we will send you price list immediately.And if you use whatsapp, skype or wechat, you can provide us your ID, it will be more convenient for our communication.
2. Why should you believe our boiler quality?
(1).Strength calculation report with applied materials information;
(2).100%NDT(non-destructive inspection) report of steel plate, tube and welding rod;
(3).100% X-ray inspection( (Longitudinal, transversal safety inspection)): ensure the quality of entire boiler;
(4).Hydrostatic test: ensure the standard working pressure and safety;
(5).Third-party inspection report:By Jiangsu Boiler Inspection Institute;
(6).Passed ISO:9001 ,ISO14001,OHASA18001 and ASME(S and U) and A-class boiler certificate.
3. Quality warrantee
The seller guarantee quality of the machines for a period of 12 months from the date of trial run finish, but not to exceed 18 months from date on which the goods leave factory. If any parts (excluding easily damaging parts) are found defective in quality in the first year, the seller should replace free-of-cost.
4.Terms of payment
T/T 30% of total contract value as down payment;
T/T or L/C 70% of total contract value before delivery.
5.Claim
Any claims by the buyers regarding the machines shipped should be filed within 30 days after arrival of machines at the destination specified in the relative B/L and supported by a survey report issued by a surveyor approved by the sellers, otherwise the sellers shall refuse to consider. Claims in respect of matters within responsibility of insurance company and/or shipping company will not be considered by the seller.
6. What is the using life of your boiler?
A:Normally the boiler is designed for 20 years life span, but with right operation and good maintenance,the boiler can be used for 20-25 years.


Ordering and Pricing
- Minimum order quantity: 1 set
- Volume pricing:
- 1+ set: US $10000 / set
- Ships from: China
- Customization: OEM and ODM accepted on qualifying volumes.
Frequently Asked Questions
What is the minimum order quantity for this steam boiler?
The standard minimum order quantity is 1 set. Trial orders can usually be arranged for buyers evaluating the product before a full production run.
What warranty is provided?
The manufacturer provides a 1 Year warranty. Spare parts and technical support remain available after the warranty period.
Do you accept OEM or custom branding?
Yes. Custom logo, colour, packaging and specification changes are accepted on qualifying order volumes. Send your artwork and technical requirements with your enquiry.
How long does production and delivery take?
In-stock configurations typically ship within 7–15 days. Customised or large-volume orders are usually produced in 25–35 days, confirmed on order.
About the Manufacturer
This product is produced by Wuxi Zozen Boilers Co., Ltd., based in China. The company 21 years as a verified Alibaba.com supplier, operates its own manufacturing, passed third-party supplier assessment. Browse the full Wuxi Zozen Boilers Co., Ltd. range on HVACR Nexus.
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